"No child processes"

Hello all,

I'm trying to use Bamboo to make a simple maven build, but I'm stuck with an error I don't understand. 

The system is trying to launch the "fork()" function, but is failing, and I can't understand why. Rebooting the server, restarting the Bamboo application don't have an impact on this. Any idea?

Here's the logging output :

16-Dec-2014 09:09:42Starting task 'Maven clean' of type 'com.atlassian.bamboo.plugins.maven:task.builder.mvn3'
16-Dec-2014 09:09:42
Beginning to execute external process for build 'my-server-project - Project Server - Default Job #5 (SSSER-SSSMS-JOB1-5)'
... running command line:
/usr/bin/mvn --batch-mode -Djava.io.tmpdir=/opt/atlassian/bamboo/current/temp/SSSER-SSSMS-JOB1 clean
... in: /data/atlassian/application-data/xml-data/build-dir/SSSER-SSSMS-JOB1
... using extra environment variables:
bamboo_capability_system_jdk_JDK_1_8=/usr/java/jre1.8.0_25
JAVA_HOME=/usr/java/jre1.8.0_25
bamboo_planRepository_type=stash-rep
bamboo_shortPlanName=Project Server
bamboo_planKey=SSSER-SSSMS
bamboo_repository_git_repositoryUrl=ssh://git@stash.company.com:7999/sssm/my-server-project.git
bamboo_repository_524289_name=my-server-project
bamboo_planRepository_1_branchName=dev
bamboo_shortPlanKey=SSSMS
bamboo_shortJobKey=JOB1
bamboo_repository_524289_git_branch=dev
bamboo_build_working_directory=/data/atlassian/application-data/xml-data/build-dir/SSSER-SSSMS-JOB1
bamboo_repository_524289_previous_revision_number=8f1be33c247d78b196c975c77f43116126d2f758
bamboo_planRepository_1_branch=dev
bamboo_repository_revision_number=8f1be33c247d78b196c975c77f43116126d2f758
M2_HOME=/usr
bamboo_planName=my-server-project - Project Server
bamboo_buildResultsUrl=http://bamboo.company.com:8085/browse/SSSER-SSSMS-JOB1-5
bamboo_planRepository_revision=8f1be33c247d78b196c975c77f43116126d2f758
bamboo_buildResultKey=SSSER-SSSMS-JOB1-5
bamboo_repository_git_username=
bamboo_buildKey=SSSER-SSSMS-JOB1
bamboo_repository_previous_revision_number=8f1be33c247d78b196c975c77f43116126d2f758
bamboo_capability_system_git_executable=/usr/bin/git
bamboo_working_directory=/data/atlassian/application-data/xml-data/build-dir/SSSER-SSSMS-JOB1
bamboo_capability_system_builder_mvn3_maven3=/usr
bamboo_agentWorkingDirectory=/data/atlassian/application-data/xml-data/build-dir
bamboo_buildPlanName=my-server-project - Project Server - Default Job
bamboo_repository_name=my-server-project
useMavenReturnCode=false
bamboo_capability_system_jdk_JDK_1_8_0_25__JRE_=/usr/java/jre1.8.0_25
bamboo_resultsUrl=http://bamboo.company.com:8085/browse/SSSER-SSSMS-JOB1-5
bamboo_repository_git_branch=dev
bamboo_planRepository_1_revision=8f1be33c247d78b196c975c77f43116126d2f758
bamboo_repository_524289_git_username=
bamboo_ManualBuildTriggerReason_userName=elebon
bamboo_planRepository_1_type=stash-rep
bamboo_planRepository_1_previousRevision=8f1be33c247d78b196c975c77f43116126d2f758
MAVEN2_HOME=/usr
bamboo_planRepository_1_name=my-server-project
bamboo_planRepository_branch=dev
bamboo_planRepository_username=
bamboo_planRepository_branchName=dev
bamboo_capability_system_jdk_JDK=/usr/java/jre1.8.0_25
bamboo_shortJobName=Default Job
bamboo_repository_branch_name=dev
bamboo_planRepository_previousRevision=8f1be33c247d78b196c975c77f43116126d2f758
bamboo_agentId=131073
bamboo_planRepository_1_repositoryUrl=ssh://git@stash.company.com:7999/sssm/my-server-project.git
bamboo_planRepository_repositoryUrl=ssh://git@stash.company.com:7999/sssm/my-server-project.git
bamboo_repository_524289_revision_number=8f1be33c247d78b196c975c77f43116126d2f758
bamboo_repository_524289_branch_name=dev
bamboo_dependenciesDisabled=false
bamboo_planRepository_1_username=
bamboo_planRepository_name=my-server-project
bamboo_buildNumber=5
bamboo_repository_524289_git_repositoryUrl=ssh://git@stash.company.com:7999/sssm/my-server-project.git
bamboo_buildTimeStamp=2014-12-16T09:09:42.105+01:00
PATH=/usr/java/jre1.8.0_25/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin
16-Dec-2014 09:10:14/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:15/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:17/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:21/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:29/usr/share/java-utils/java-functions: fork: Resource temporarily unavailable
16-Dec-2014 09:10:29/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:30/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:32/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:36/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:44/usr/share/java-utils/java-functions: fork: Resource temporarily unavailable
16-Dec-2014 09:10:44/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:45/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:47/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:51/usr/share/java-utils/java-functions: fork: retry: No child processes
16-Dec-2014 09:10:59/usr/share/java-utils/java-functions: fork: Resource temporarily unavailable
16-Dec-2014 09:11:00Failing task since return code of [/usr/bin/mvn --batch-mode -Djava.io.tmpdir=/opt/atlassian/bamboo/current/temp/SSSER-SSSMS-JOB1 clean] was 254 while expected 0
16-Dec-2014 09:11:00Finished task 'Maven clean' with result: Failed

5 answers

1 accepted

I had a similar problem. Maven build worked properly in terminal but failed when done through Bamboo. System was Centos 7 with the distribution's default Maven (3.0.5)

Manually upgraded to Maven  3.2.5, pointed m2_home and other env variables, and build now works correctly.

This worked. Thank you! I don't understand why it was failing with this specific version (the same as yours, 3.0.5), but it's fine now, I can move forward!

Hello Rafael,

My mistake, I took the same configuration I used for Jira. I'm going to install JRE 7 and try again.

I have attempted to run the mvn test manually. I ran into another problem which was my maven configuration (the servers don't have an access to Internet and I'm using Sonatype Nexus as a proxy), but at least I have a more understandable output.

Edit : I installed JDK 7 (Update 60), and made sure Bamboo uses it (I used 'alternatives' and $JAVA_HOME env variable). The result is the same...

0 votes

Hello Emeric,

Thank you for your question.

I have noticed you are running Bamboo using Java SDK 1.8 which is not officially supported based Bamboo - Supported Platforms documentation. I would suggest you on downgrading it to SDK 1.7.

  • have you attempted to run this build manually by opening up a Terminal? If not, could you please let me know if you experience the same issue by running your Maven project from Terminal, please?

Kind regards,
Rafael P. Sperafico
Atlassian Support

0 votes

Hello Emeric,

Thank you for your update.

The reason I asked you to attempt to run the same build from a Terminal is to eliminate the possibility Bamboo is causing the error you are experiencing. Due to that, I would suggest you on making sure you are able to run this build successfully from a Terminal and after that set it up in Bamboo.

Kind regards,
Rafael P. Sperafico
Atlassian Support

Hello Rafael,

Thank you for your help. I've just built the project using mvn and the bamboo user, and it worked like a charm.

I've used the very same commands shown in the log output :

cd  /data/atlassian/application-data/xml-data/build-dir/SSSER-SSSMS-JOB1
/usr/bin/mvn --batch-mode -Djava.io.tmpdir=/opt/atlassian/bamboo/current/temp/SSSER-SSSMS-JOB1 clean test

I re-checked the JVM used by Bamboo in the "System information" panel, and it is the 1.7.0_60 from Oracle Corporation, which I also use for compilation.

Hello Emeric, Thank you for you update. I would kindly ask you to accept the answer so the same will be visible to others who might be facing the same issue you have inquired, please. Thank you for your understanding. — Kind regards, Rafael P. Sperafico Atlassian Support

No, I'm being misunderstood. I meant "testing the maven commands generated by Bamboo manually run perfectly, but it still fails when I run it from Bamboo". I'm going to do a fresh install of Bamboo, on another OS (I'm running CentOS 7), to see if I can reproduce my problem. Again, thank you for your help.

I just ran into the problem specified by the OP (lots of "no child process" messages). On my CentOS 7 box, where Bamboo Server is running on JDK 1.8, I have the default maven installed:

$ mvn -version 
Apache Maven 3.0.5 (Red Hat 3.0.5-16)
Maven home: /usr/share/maven
Java version: 1.7.0_99, vendor: Oracle Corporation
Java home: /usr/lib/jvm/java-1.7.0-openjdk-1.7.0.99-2.6.5.0.el7_2.x86_64/jre
Default locale: en_US, platform encoding: UTF-8
OS name: "linux", version: "3.10.0-327.10.1.el7.x86_64", arch: "amd64", family: "unix"

I had originally set the Maven path to /bin/mvn, but the Maven 3.x plugin adds that to the specified path and then can't run /bin/mvn/bin/mvn. Using /. didn't work. Using /usr/share/maven as the path in the executable specification worked.

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